Oxfordshire · England
Sand mastic for sash & case windows in Bicester, Oxfordshire
Sand mastic in Bicester from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
- Patchy fillers round a sash window
How we handle sand mastic in Bicester
We work across Bicester renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. If you are dealing with old cement repairs round a window that have failed and wind and rain getting in round a sash window, we can put it right, whatever the surface.
In a town like Bicester, the windows on the most exposed side of a house take the brunt of the rain, so the mastic there tends to fail first. Checking every frame, not just the obvious one, is time well spent.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Bicester (OX26, OX27)
- Region
- Oxfordshire
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of sand mastic
Your quote is based on your job. We take into account:
- Whether old sealant or filler has to be cut out
- The size of the job
- Any working-time requirements on site
- How easy the joints are to reach
Combining jobs into one visit generally makes better use of the time than several visits. We will give you a clear price for the lot.
What we need to know
To make quoting easier, let us know:
- The rough size of the job
- A few photos by email, if you can
- The address or postcode of the job
- Any previous sealing or DIY work
For sand mastic in Bicester, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Places near Bicester
Also in Bicester
What happens on the day
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours for a single window, longer for several from start to finish. A visit in Bicester needs access to the work and a place to park close by. For outside work, let us know about side access, gates and any upper-floor joints.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- On commercial sites, let us know about site rules
- Tell us about any previous sealing or DIY attempts
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or send us an email and describe the job, and photos are welcome.
Read more
What the job involves on each surface
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. Sand mastic is shaped by hand to suit.
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Common questions in Bicester
Can you do sand mastic in Bicester?
Yes, Bicester is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear quote.
Do you work for landlords with property near Bicester North station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
How long will you be here?
Typically it takes a few hours for a single window, longer for several. Larger jobs naturally take longer, and we will tell you how long to expect.
Should I use sand mastic or silicone?
For period timber windows in stone or brick, sand mastic is often the better fit. Modern frames normally suit a flexible sealant, and we will explain why.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. All the old silicone is removed first so the mastic beds in well.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Work for landlords, hotels and businesses
If you manage several properties in or around Bicester, jobs at different addresses can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Why deal with it now?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. In a family home in Bicester, a failed seal around a bath or a frame lets water into places you can’t see, such as under the floor, behind a panel or into a wall. Left alone, that means rot, damp and a bigger repair.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What you get with us
- Domestic, commercial and hotel work
- Arbo and Everbuild products
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
Take a look at our cost guide or customer reviews.
What sand mastic looks like in Bicester
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Bicester North station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For site and facilities teams at buildings such as Brookside Primary School, its window and door frames need their mastic kept sound, just like a home’s. In the older streets around Church of St Edburg, the joint between an old wall and a newer frame is normally the first place rain gets in.
Bicester is about 11 miles north of Oxford, in Oxfordshire. We carry out sand mastic for homes and businesses in Bicester and nearby, as part of our work across Oxfordshire. Our Oxfordshire coverage runs to 443 places, Bicester among them. For nearby work, see our Oxford page (11 miles or so).
Postcode districts we cover here for sand mastic: OX26 and OX27. Whether your property is on Market Square, Market End Way and London Road or anywhere close by, we can help. Main roads around Bicester include the A4095 and B4100. Nearby, we also carry out sand mastic in Bure Park (1 mile north), Caversfield (1 mile north), Bucknell (2 miles north-west), Stratton Audley (3 miles north-east) and Stoke Lyne (3 miles north). Further out, we also cover Oxford (11 miles south), Banbury (14 miles north-west), Thame (13 miles south-east), Kidlington (8 miles south-west), Headington Quarry (10 miles south) and St John Street area (11 miles south-west). Bicester is one of the larger places we cover in Oxfordshire.
Near you in Bicester
Locally, jobs take us to homes and businesses close to Bicester Technology Studio and The Plough pub, among other places. Bicester has its own railway station: Bicester North station. Nearby you’ll also find Bicester Community Hospital (under half a mile south) and Bicester Village (0.7 miles south). Open spaces near Bicester include Graven Hill and Woodsides Meadow.
When it is not the sealant
To be straight with you, some problems need a different trade:
- Cracked or broken glass
- Whether work needs listed building consent
- Sashes that need overhauling
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
Surfaces we seal
- Timber door frames
- Brick reveals
- Stone surrounds
- Period & listed homes
- Tenement windows
- Sash and case windows